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advent-of-coding-2024/Day 01/Part 1/index.ts
2024-12-09 06:49:02 +01:00

37 lines
968 B
TypeScript

import fs from 'node:fs';
const listOne: number[] = [];
const listTwo: number[] = [];
const listDiff: number[] = [];
export default function runner(input: string) {
fs.readFile(`./${input}`, 'utf8', (err, data) => {
if (err) throw err;
data.split('\n').forEach(line => {
const spLine = line.split(' ');
if (!spLine[0] || !spLine[1]) throw new Error()
listOne.push(parseInt(spLine[0]))
listTwo.push(parseInt(spLine[1]))
})
listOne.sort((a, b) => a - b)
listTwo.sort((a, b) => a - b)
if (listOne.length != listTwo.length || !listOne || !listTwo) {
throw `Different length of list \n 01: ${listOne.length}, 02: ${listTwo.length}`
}
for (let i = 0; i < listTwo.length; i++) {
let diff = ((listOne[i] ?? 0) - (listTwo[i] ?? 0));
if (diff < 0) diff *= -1
listDiff.push(diff)
}
let sum = 0;
listDiff.forEach(value => {
sum += value
})
console.log(sum)
})
}